Hand sawing-machine



N. M. LAWRENCE, J. O. W YKOFF & J. R. WHITAKER.

Hand Sawing-Machine.

No. 227,i6 9. Patented May 4, 1880,

., UNITED STATES PATENT OEEicE.

NATHAN M. LAWRENCE, JOHN G. WYKOFF, AND JOSEPH R. WHITAKER, OFCLARKSVILLE, OHIO.

HAND SAWlNG-MACHINE.

SPECIFICATION formingpart of Letters Patent'No. 227,169, dated May 4,1880.

Application filed January 12, 1880.

To all whom it may concern:

Be itknown that we, NATHAN M. LAWRENCE, JOHN C. WYKOFF, and J osEPH R.WHITAKER, all of Olarksville, Clinton county, Ohio, have invented a newand useful Hand Sawing-Machine, of which the following is aspecification.

Our improvements are primarily devised for use in those handsawing-machines in which the saw-blade issupported and guided in asuitable frame, one of whose ends rests upon the ground, while the otherend rests upon and dogs the log; and our improvements comprise anarrangement of levers and rods whereby the operator is enabled to impartsufficient and equable stroke to the saw by an easy motion of his hand.

Our improvements further comprise a novel form of casting, constitutinga means for attaching the legs to the frame and of journaling theoperative levers.

Our improvements further comprise a platform attachment which,whileaffording a convenient footing for the operator, at the same timeutilizes his weight to hold the machine firmly down upon the work.

The platform and other jointed members are capable of being foldedcompactly against the frame when not in use.

In the accompanying drawings, Figure l is a side elevation of anapparatus embodying our invention, a portion of one leg being brokenaway. Fig. 2 represents castings, hereinafter particularly specified.Fig. 3 represents our machine in its folded condition, the forwardportion of the beam and guide being shown in section. Fig. 4 is a topview of the foot-board or platform.

We employ a wooden beam, A, whose forward endhas the customary slot aand inverted- U-formed or slotted iron B, to guide the sawblade into thelog.

The bolts which attach the guide B are pointed at their lowerextremities, to serve as dogs D.

The rear end, E, of the beam A is bolted to a cast bearing-block, F, towhose downwardlydiverging lugs G wooden legs I are attached by bolts H.

The casting F is longitudinally slotted, f,

and transversely notched, f, to receive and afford bearings for theT-headed journals j and 7a of saw-hanger J and bent lever K. Saidjournals are secured by caps L.

The heel K of the bent lever K is, by means of link or rod M, coupled tothe hanger J so near its fulcrum as to secure the desired sweep orstroke of the saw for a given motion of the operating lever or handle K,the former being preferably about twice that of the latter.

The lever K is preferably for the most part of wood, and is bolted tothe cast T-head K in the manner shown.

Pivoted to the hanger J is the saw-helve N, which may be either of woodor of iron, and which is bolted to the saw-blade O at P.

The legs I are connected near the ground by means of a stretcher, Q,from which depends, by clips or staples O, the front end of a plank orplatform, R, preferably of the represented trapezoidal shape.

In operating the machine the workman, having rested the points D of beamA upon the log so as to dog the same, couples the lever K K to thehanger J, and, unfolding the platform R, he mounts the same, and by aneasy vertical vibration of the lever K K causes the desired horizontalreciprocation of the saw-blade.

The parts being so proportioned as for-a given movement of the operatorshand to produce about twice as much motion in the sawblade, the operatoris not required to inconveniently move his body, but can accomplish thework almost wholly by an easy motion of his arm alone, his weight at thesame time serving to hold the apparatus firmly in position.

For stowage or transportation of the apparatus it may be divested of itsblade, as shown by strong lines in Fig. 2 or the blade being simplylifted, as shown by dotted lines in said figure, may be secured in thatposition by the introduction of a wooden peg or pin at T in the angleformed by the beam A and the slot ted guide B.

At the same time the various levers, 850., may, after disconnection ofthe lever K from the hanger J, befolded against the frame in the compactmanner represented in said figure.

We claim as new and of our invention- 1. In a drag-sawing machine, thecombination of the beam A and diverging legs I, for the T-headedjournals j 7c of the hanger J,

rigidly connected by bearing-block I said and the operating-lever K,substantially as block being furnished with suitable journals set forth.

f for the reception of the levers K and J with In testimony of whichinvention we hereunto I 5 5 the L-shaped hand-lever K, link M and leverset our hands.

or saw-hanger J, substantially as described. NATHAN M. LAWRENCE.

2. The described combination of beam A JOHN G. WYKOFF. and the castbearing-block F, having flanged JOSEPH R. WHITAKER. projections or lugsG for attachment of the Attest: 1o diverging legs I, said bearing-blockhaving GEO. H. KNIGHT,

longitudinal slot f and transverse notches f WILLIAM UXAN.

